The two discussed “a range of shared interests,” a palace spokesperson said in a statement — including “support for veterans, mental health, conservation, empowering young people and the work of their respective foundations.”

• Want to keep up with the latest royals coverage? Click here to subscribe to the Royals Newsletter.

On Tuesday, the former president tweeted about the attack, writing “Our hearts go out to those killed and wounded in Manchester. Americans will always stand shoulder to shoulder with the people of the UK.”

He also wrote about his meeting with Harry on Saturday, tweeting “Good to see my friend Prince Harry in London to discuss the work of our foundations & offer condolences to victims of the Manchester attack.”

Our hearts go out to those killed and wounded in Manchester. Americans will always stand shoulder to shoulder with the people of the UK.

It’s been thirteen months since Harry, William and Kate hosted Obama and former First Lady Michelle Obama for a private dinner at the Palace.

The special evening – which followed lunch at Buckingham Palace with the Queen – was arranged by William on behalf of all three royals, and “they were delighted that [the First Couple] were able to accept,” a palace source told PEOPLE at the time.

From left: Prince Harry, President Barack Obama, First Lady Michelle Obama, Prince William and Princess Kate

Source: Kensington Palace/Twitter

“The three of them have built up a relationship with the [now former] president and first lady over the years,” the source added.

Harry has his own special relationship with the Michelle. Last June, he hosted the First Lady and First Daughters Malia and Sasha – along with grandma Marian Robinson – for tea at Kensington Palace. Then in October, it was the the Obamas’ turn to play hosts to a visiting Harry, where the chemistry between Michelle and the royal was on adorable display.